• Assess postmenopausal women for cancer by endometrial biopsy, transvaginal ultrasound, or saline infusion sonohysterogram. A
• Treat mild dysfunctional uterine bleeding (DUB) with nonsteroidal anti-inflammatory drugs, levonorgestrel intrauterine device (IUD), or danazol. A
• Treat moderate DUB with oral contraceptive pills C, levonorgestrel IUD, danazol, or tranexamic acid. A
• Treat severe DUB with the same agents used for moderate DUB, or with IV estrogen followed by oral contraceptive pills. C
Strength of recommendation (SOR)
A Good-quality patient-oriented evidence
B Inconsistent or limited-quality patient-oriented evidence
C Consensus, usual practice, opinion, disease-oriented evidence, case series
Test your skills: How would you treat these 3 patients?
CASE 1: Casey is a 14-year-old with a normal body mass index who has had heavy vaginal bleeding for 10 days. For the last 3 days, the bleeding has been so heavy she has been soaking more than 15 pads a day. She feels tired and is light-headed and dizzy when she stands up. Casey had her first period 13 months ago. Since then, her periods have varied in length from 18 to 40 days, with heavy bleeding for 7 to 14 days. She tells you she is not taking any prescription or herbal medications or over-the-counter supplements, and does not have any other medical problems. She is not sexually active. Her physical examination was remarkable only for pale skin and a positive tilt test. She feels frustrated and wants something done immediately.
CASE 2: Sarah is a 35-year-old obese woman whose chief complaint is irregular periods. For the past 3 years, she has had only 3 to 6 periods per year, each period lasting for 3 to 10 days. Her most recent period was 4 months ago. Sarah has a moderate amount of acne and facial hair.
CASE 3: Joan is a 53-year-old postmenopausal woman who has never been pregnant. She has a history of type 2 diabetes mellitus, hypertension, and obesity. She has come to your office for a routine physical examination. She tells you that her periods were regular until she stopped menstruating 4 years ago. But for the past 6 to 8 months she says she’s had irregular bleeding every 30 to 45 days, each period of bleeding lasting for 3 to 7 days. Her previous Pap smears and mammograms were normal. She has no family history of breast, gastrointestinal, or genital tract cancer. Her physical examination, including her pelvic examination, is negative.
These 3 women are fairly typical patients in a family medicine practice. Most women experience episodes of abnormal uterine bleeding (AUB) at some point in their reproductive lives. The condition occurs in approximately 1 in every 3 women of reproductive age and 1 in 10 postmenopausal women, and the impact on quality of life is often substantial.1,2 Abnormal bleeding can be divided into 4 major categories: genital tract pathology, systemic disease, exposure to medication or radiation, and dysfunctional uterine bleeding (DUB). Specific conditions within each category are listed in TABLE 1. The focus of this article will be on DUB, the category that remains after the other possibilities are excluded.
First, find out what your patient means by “abnormal”
A normal menstrual cycle varies in length between 24 and 35 days, with menstrual flow lasting 2 to 7 days. Blood loss of 30 to 80 cc per cycle is considered normal.3-5 To quantify blood loss, ask the patient how many pads or tampons she uses each period (<21 would be normal), how often she has to change pads (every 3 hours is usual), the size of clots (less than 1 cm is normal), and whether she has to get up at night to change pads.6 If blood loss is sufficient to cause anemia, the condition is always considered abnormal and requires further evaluation. When your patient’s description leaves you in doubt about whether her bleeding is abnormal, base your evaluation and treatment on her perception of a change in her menstrual cycle.
Stages of the reproductive life cycle
The meaning of abnormal bleeding varies with your patient’s stage in her reproductive life cycle. Uterine bleeding in a premenarchal child or a postmenopausal woman is always abnormal and must be evaluated.7-9
Premenarchal children with vaginal bleeding should be evaluated for trauma, sexual or physical abuse, foreign bodies, signs of precocious puberty, and possible infectious etiologies.7 If the cause of the bleeding is not obvious, these patients should be immediately referred to a pediatric gynecologist.